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-% Copyright (C) 1992, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
-%
-% This software is provided AS-IS with no warranty, either express or
-% implied.
-%
-% This software is distributed under license and may not be copied,
-% modified or distributed except as expressly authorized under the terms
-% of the license contained in the file LICENSE in this distribution.
-%
-% For more information about licensing, please refer to
-% http://www.ghostscript.com/licensing/. For information on
-% commercial licensing, go to http://www.artifex.com/licensing/ or
-% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
-% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
-
-% $Id: type1ops.ps 6300 2005-12-28 19:56:24Z giles $
-% type1ops.ps
-% Define the Type 1 and Type 2 font opcodes for use by Ghostscript utilities.
-
-% Define the default value of lenIV.
-% Note that this expects the current font to be on the dictionary stack.
-
-/lenIV { FontType 2 eq { -1 } { 4 } ifelse } def
-
-% ---------------- Encoding ---------------- %
-
-/Type1encode 70 dict
-
- % Data types
-
-dup /nulltype {
- pop ()
-} put
-dup /nametype {
- Type1encode exch get
-} put
-dup /stringtype {
-} put
-dup /integertype {
- dup dup -107 ge exch 107 le and {
- 139 add (x) dup 0 4 -1 roll put
- } {
- dup dup -1131 ge exch 1131 le and {
- dup 0 ge { 16#f694 } { neg 16#fa94 } ifelse add
- (xx) dup dup 0 4 index -8 bitshift put
- 1 4 -1 roll 255 and put
- } {
- (\377xxxx) 1 1 4 {
- dup 8 mul 32 sub 3 index exch bitshift 255 and
- 2 index 3 1 roll put
- } for exch pop
- } ifelse
- } ifelse
-} put
-
- % Operators
-
-% Identical or similar in Type 1 and Type 2.
-/c_hstem 1 def dup /hstem <01> put
-/c_vstem 3 def dup /vstem <03> put
-/c_vmoveto 4 def dup /vmoveto <04> put
-/c_rlineto 5 def dup /rlineto <05> put
-/c_hlineto 6 def dup /hlineto <06> put
-/c_vlineto 7 def dup /vlineto <07> put
-/c_rrcurveto 8 def dup /rrcurveto <08> put
-/c_callsubr 10 def /s_callsubr <0a> def dup /callsubr s_callsubr put
-/c_return 11 def dup /return <0b> put
-/c_escape 12 def
- /ce_div 12 def /s_div <0c0c> def dup /div s_div put
-/c_endchar 14 def /s_endchar <0e> def dup /endchar s_endchar put
-/c_rmoveto 21 def dup /rmoveto <15> put
-/c_hmoveto 22 def dup /hmoveto <16> put
-/c_vhcurveto 30 def dup /vhcurveto <1e> put
-/c_hvcurveto 31 def dup /hvcurveto <1f> put
-% Only in Type 1.
-/c_closepath 9 def dup /closepath <09> put
-/c_hsbw 13 def /s_hsbw <0d> def dup /hsbw s_hsbw put
- /ce_dotsection 0 def /s_dotsection <0c06> def dup /dotsection s_dotsection put
- /ce_vstem3 1 def /s_vstem3 <0c01> def dup /vstem3 s_vstem3 put
- /ce_hstem3 2 def /s_hstem3 <0c02> def dup /hstem3 s_hstem3 put
- /ce_seac 6 def /s_seac <0c06> def dup /seac s_seac put
- /ce_sbw 7 def /s_sbw <0c07> def dup /sbw s_sbw put
- /ce_callothersubr 16 def /s_callothersubr <0c10> def dup /callothersubr s_callothersubr put
- /ce_pop 17 def /s_pop <0c11> def dup /pop s_pop put
- /ce_setcurrentpoint 33 def /s_setcurrentpoint <0c21> def dup /setcurrentpoint s_setcurrentpoint put
- /s_setcurrentpoint_hmoveto s_setcurrentpoint <8b16> concatstrings def
-% Only in Type 2.
-dup /blend <10> put
-dup /hstemhm <12> put
-dup /hintmask <13> put
-dup /cntrmask <14> put
-dup /vstemhm <17> put
-dup /rcurveline <18> put
-dup /rlinecurve <19> put
-dup /vvcurveto <1a> put
-dup /hhcurveto <1b> put
-dup /callgsubr <1d> put
- dup /and <0c03> put
- dup /or <0c04> put
- dup /not <0c05> put
- dup /store <0c08> put
- dup /abs <0c09> put
- dup /add <0c0a> put
- dup /sub <0c0b> put
- dup /load <0c0d> put
- dup /neg <0c0c> put
- dup /eq <0c0f> put
- dup /drop <0c12> put
- dup /put <0c14> put
- dup /get <0c15> put
- dup /ifelse <0c16> put
- dup /random <0c17> put
- dup /mul <0c18> put
- dup /sqrt <0c1a> put
- dup /dup <0c1b> put
- dup /exch <0c1c> put
- dup /index <0c1d> put
- dup /roll <0c1e> put
- dup /hflex <0c22> put
- dup /flex <0c23> put
- dup /hflex1 <0c24> put
- dup /flex1 <0c25> put
-
-readonly def
-
-% ---------------- Decoding ---------------- %
-
-/Type1decode 512 array
-
-Type1encode {
- dup type /stringtype eq {
- dup length 1 eq { 0 get } { 1 get 256 add } ifelse
- % stack: array key code
- exch 2 index 3 1 roll put
- } {
- pop pop
- } ifelse
-} forall
-
-dup 12 {
- dup read pop dup Type1decode exch 256 add get dup null ne
- { exch pop }
- { pop 2 string dup 0 12 put dup 1 4 -1 roll put }
- ifelse
-} put
-dup 28 { % Type 2 only
- dup read pop 128 xor 128 sub 8 bitshift
- 1 index read pop add
-} put
-32 1 246 { 2 copy dup 139 sub put pop } for
-dup 247 { dup read pop 108 add } put
-dup 248 { dup read pop 364 add } put
-dup 249 { dup read pop 620 add } put
-dup 250 { dup read pop 876 add } put
-dup 251 { dup read pop 108 add neg } put
-dup 252 { dup read pop 364 add neg } put
-dup 253 { dup read pop 620 add neg } put
-dup 254 { dup read pop 876 add neg } put
-dup 255 { % Different for Type 1 and Type 2
- dup read pop 128 xor 128 sub
- 3 { 8 bitshift 1 index read pop add } repeat
- FontType 2 eq { 65536.0 div } if
-} put
-
-readonly def
-
-% ---------------- Procedures ---------------- %
-
-% For these utilities, a CharString is represented by a sequence of
-% integers, reals, strings, and names, either in an array or on the stack.
-% Integers and reals represent themselves; strings are other data that
-% appears in the CharString; names are CharString operator names.
-% A CharString in an array is called a "charproc"; a CharString on
-% the stack is called a "charstack", and is delimited by a mark.
-% Individual elements are called "chartokens".
-
-% ------ Encoding ------ %
-
-% Get the string for a chartoken.
-% Note that this string may be overwritten by the next call.
-/chartoken_string { % <chartoken> chartoken_string <string>
- dup type Type1encode exch get exec
-} bind def
-% Compute the length of a CharString.
-/chartoken_length { % <chartoken> chartoken_length <length>
- chartoken_string length
-} bind def
-/charproc_length { % <charproc> charproc_length <length>
- 0 exch { chartoken_length add } forall
-} bind def
-/charstack_length { % <charstack> charstack_length <charstack> <length>
- counttomark 0 exch -1 1 { index chartoken_length add } for
-} bind def
-
-% Write a CharString to a file. Normally this will be a NullEncode filter
-% writing on a string of the correct length.
-/chartoken_write { % <file> <chartoken> chartoken_write -
- chartoken_string writestring
-} bind def
-/charproc_write { % <file> <charproc> charproc_write -
- { 1 index exch chartoken_write } forall pop
-} bind def
-% Note that the arguments of charstack_write are backwards.
-/charstack_write { % <charstack> <file> charstack_write -
- counttomark 1 sub -1 1 { index 1 index exch chartoken_write } for
- cleartomark
-} bind def
-
-% Convert a charproc or charstack to an *un*encrypted CharString.
-/charproc_string { % <charproc> charproc_string <string>
- mark exch aload pop charstack_string
-} bind def
-/charstack_string { % <charstack> charstack_string <string>
- charstack_length lenIV 0 gt {
- lenIV add string
- dup dup length lenIV sub lenIV exch getinterval % skip lenIV
- } {
- string
- } ifelse
- /NullEncode filter
- exch 1 index counttomark 1 add 2 roll
- charstack_write closefile
-% lenIV 0 ge { 4330 exch dup .type1encrypt exch pop readonly } if
-} bind def
-
-% ------ Decoding ------ %
-
-% Decode a CharString (unencrypted).
-/charstack_read { % <file> charstack_read <no-mark-charstack>
- { dup read not { pop exit } if
- Type1decode 1 index get dup null eq {
- pop 1 string dup 0 4 -1 roll put
- } {
- exch pop exec
- } ifelse exch
- } loop
-} bind def